Polkadot News
Web3 Foundation has published an article explaining the recent changes to inflation on Polkadot. https://medium.com/web3foundation/polkadots-referendum-on-new-linear-inflation-e17d2d56f053
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The staking rate on Polkadot has decreased and is now at 50.83%. Polkadot Cloud Staking | Polkadot Staking (DOT)
Note that as the staking rate decreases, staking rewards increase. https://wiki.polkadot.network/docs/general/dune-analytics/polkadot-dashboards/polkadot-staking-dashboard#rewards-rate-math
Kusama News
Referendum 477, proposing a KSM liquidity subsidy for vKSM from Bifrost, is currently confirming. Polkassembly - Referendum #477
The staking rate on Kusama has also continued to decrease and now stands at 44.9%. Polkadot Cloud Staking | Polkadot Staking (DOT)